AM-25.000MFNI-T Equivalent & Substitute Parts Reference

Part Overview

The AM-25.000MFNI-T is a 25 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in 4-SMD, No Lead package configuration. This active product operates across the industrial temperature range of -40°C to 125°C and meets AEC-Q200 automotive qualification standards. The crystal exhibits ±30ppm frequency tolerance with 16pF load capacitance and 80 Ohms equivalent series resistance, making it suitable for precision timing applications requiring stable frequency reference.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits alternative manufacturers meeting identical electrical and mechanical specifications. The substitute parts listed maintain compatibility through matching frequency, load capacitance tolerance, operating temperature range, package dimensions, and automotive-grade certifications.

Key Parameters

Parameter	Value	Unit	Substitution Criticality
Frequency	25.0000	MHz	Critical - Must Match Exactly
Frequency Tolerance	±30	ppm	Critical - Must Match or Better
Load Capacitance	16 / 12	pF	Critical - Determines Circuit Compatibility
ESR (Equivalent Series Resistance)	80 / 60	Ohms	Critical - Affects Oscillator Performance
Operating Temperature Range	-40 to 125	°C	Critical - Must Match Application Requirements
Package / Case	4-SMD, No Lead	Form Factor	Critical - PCB Layout Compatibility
Size / Dimension	3.20 x 2.50	mm	Critical - Physical Footprint
Height - Seated (Max)	0.80	mm	Critical - Clearance and Assembly
Mounting Type	Surface Mount	Technology	Critical - Assembly Process Compatibility
AEC-Q200 Rating	Yes	Certification	Critical - Automotive Qualification
RoHS Compliance	RoHS3 Compliant	Environmental	Important - Regulatory Requirement
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Classification	Important - Storage and Handling

Substitute Part Grouping Explanation

Substitution logic for the AM-25.000MFNI-T is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Frequency Match: All substitute parts must operate at exactly 25.0000 MHz with identical ±30ppm frequency tolerance to ensure direct replacement in timing-critical circuits without recalibration.

Load Capacitance Compatibility: The main part specifies 16pF load capacitance. Substitute parts with 12pF load capacitance (EB2532YA12-25.000M TR and SA324250F35HLR) represent a reduced load capacitance variant. This parameter directly affects the oscillator circuit's resonant frequency and stability characteristics. Selection between 16pF and 12pF variants depends on the host circuit design specifications.

ESR (Equivalent Series Resistance): The main part exhibits 80 Ohms ESR, while substitute parts show 60 Ohms ESR. Lower ESR values reduce power consumption and improve oscillator startup characteristics. Both values fall within acceptable ranges for standard crystal oscillator circuits.

Package and Physical Dimensions: All parts maintain identical 4-SMD, No Lead package configuration with 3.20mm x 2.50mm footprint and 0.80mm maximum seated height, ensuring PCB layout compatibility without redesign.

Operating Temperature Range: All parts operate across -40°C to 125°C, meeting industrial and automotive temperature requirements.

Automotive Qualification: All parts carry AEC-Q200 certification, maintaining automotive-grade reliability standards.

Environmental Compliance: All substitute parts meet RoHS3 and REACH requirements, ensuring regulatory compliance across global markets.

Parameter Comparison

Parameter	AM-25.000MFNI-T (TXC)	EB2532YA12-25.000M TR (Ecliptek)	SA324250F35HLR (CTS-Frequency Controls)
Manufacturer	TXC CORPORATION	Ecliptek	CTS-Frequency Controls
Frequency	25.0000 MHz	25.0000 MHz	25.0000 MHz
Frequency Tolerance	±30 ppm	±30 ppm	±30 ppm
Frequency Stability	±50 ppm	±50 ppm	±50 ppm
Load Capacitance	16 pF	12 pF	12 pF
ESR	80 Ohms	60 Ohms	60 Ohms
Operating Mode	Fundamental	Fundamental	Fundamental
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Package / Case	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Size / Dimension	3.20 x 2.50 mm	3.20 x 2.50 mm	3.20 x 2.50 mm
Height - Seated (Max)	0.80 mm	0.80 mm	0.80 mm
Mounting Type	Surface Mount	Surface Mount	Surface Mount
AEC-Q200	Yes	Yes	Yes
RoHS Status	RoHS Compliant	RoHS3 Compliant	RoHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

Primary Selection Criteria:

The AM-25.000MFNI-T remains the preferred choice when 16pF load capacitance is specified in the circuit design. This specification directly impacts the oscillator's frequency stability and startup behavior in the host application.

Substitute Selection - Load Capacitance Consideration:

The EB2532YA12-25.000M TR (Ecliptek) and SA324250F35HLR (CTS-Frequency Controls) are electrically equivalent substitutes when the circuit design accommodates 12pF load capacitance. Both parts maintain identical frequency, tolerance, operating temperature range, and package dimensions. The transition from 16pF to 12pF load capacitance requires verification that the host oscillator circuit design supports this reduced load value without frequency deviation beyond acceptable limits.

ESR Performance Advantage:

Both substitute parts exhibit 60 Ohms ESR compared to the main part's 80 Ohms ESR. Lower ESR provides improved oscillator startup characteristics and reduced power consumption. This represents a performance enhancement when substituting, provided the circuit design does not depend on the higher ESR value for stability.

Compliance and Certification:

All three parts maintain AEC-Q200 automotive qualification, ensuring reliability in automotive and industrial applications. The substitute parts carry RoHS3 and REACH compliance certifications, meeting current environmental and regulatory standards.

Inventory and Availability:

The substitute parts demonstrate higher inventory availability (2,701 units for Ecliptek; 3,464 units for CTS-Frequency Controls) compared to the main part (928 units), making them suitable selections when lead time reduction is a procurement objective.

Product Status:

All parts maintain Active product status, confirming ongoing manufacturer support and continued availability.

Frequently Asked Questions (FAQ)

Q: Can I substitute the AM-25.000MFNI-T with EB2532YA12-25.000M TR or SA324250F35HLR without circuit modification?

A: Substitution is possible only if your circuit design specifies 12pF load capacitance. If your design requires 16pF load capacitance, circuit modification or oscillator tuning may be necessary. Consult your circuit design documentation to confirm the load capacitance specification before substitution.

Q: What is the difference between 16pF and 12pF load capacitance?

A: Load capacitance is the external capacitance value the crystal oscillator circuit presents to the crystal element. This parameter directly affects the crystal's resonant frequency. A 16pF load capacitance design differs from a 12pF design in the oscillator circuit topology. Substituting between these values without circuit adjustment may result in frequency deviation.

Q: Are the substitute parts pin-compatible with the AM-25.000MFNI-T?

A: Yes. All parts use identical 4-SMD, No Lead package configuration with matching 3.20mm x 2.50mm footprint and 0.80mm maximum height. PCB layout and assembly processes remain unchanged.

Q: Does the lower ESR of substitute parts affect circuit performance?

A: The 60 Ohms ESR of substitute parts is lower than the main part's 80 Ohms ESR. Lower ESR generally improves oscillator startup time and reduces power consumption. Standard crystal oscillator circuits accommodate this variation without performance degradation. Verify your circuit design does not depend on the higher ESR value for stability.

Q: Are all parts automotive-qualified?

A: Yes. The AM-25.000MFNI-T, EB2532YA12-25.000M TR, and SA324250F35HLR all carry AEC-Q200 certification, meeting automotive reliability and qualification standards.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: All parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity. These parts do not require special moisture control during storage or handling.

Q: Are the substitute parts RoHS compliant?

A: Yes. The EB2532YA12-25.000M TR and SA324250F35HLR are RoHS3 compliant. The main part is RoHS compliant. All parts meet environmental regulatory requirements.

Q: What is the frequency tolerance specification, and does it differ between parts?

A: All parts specify ±30ppm frequency tolerance, ensuring identical frequency accuracy across the main part and substitutes. This tolerance applies to the initial frequency measurement at 25°C under specified load conditions.

Q: Can I use these parts interchangeably in production?

A: Interchangeability depends on your circuit design's load capacitance specification. If your design specifies 16pF load capacitance, use the AM-25.000MFNI-T. If your design specifies 12pF load capacitance, either substitute part is interchangeable. Confirm load capacitance requirements in your circuit design documentation before implementing production substitution.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message